Note 6 - Net Loss Per Share - Earnings Per Share Reconciliation (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator:
Numerator for basic and diluted income (loss) per share, net income (loss) available to common shareholders	$ (1,769,770)	$ 141,234	$ (5,332,385)	$ (360,535)
Denominator:
Denominator for basic income (loss) per share, weighted average shares outstanding (in shares)	20,371,654	20,033,515	20,322,934	19,986,279
Effect of dilutive securities (in shares)	0	4,902,002	0	0
Denominator for diluted earnings per share, adjust weighted average shares and assumed conversion (in shares)	20,371,654	24,935,517	20,322,934	19,986,279
Basic income (loss) per common share (in dollars per share)	$ (0.09)	$ 0.01	$ (0.26)	$ (0.02)
Diluted income (loss) per common share and common share equivalent (in dollars per share)	$ (0.09)	$ 0.01	$ (0.26)	$ (0.02)